Senior Software Engineer / TypeScript / React / Next / Node / Python

This is a full time, onsite Full Stack Engineering role with a fast-growing, SaaS company expanding its engineering presence in Arlington. The team builds software used by sports clubs, teams, and athletic organizations to manage websites, memberships, competitions, events, scheduling, and more. After years of success in Canada and rapid revenue growth, the company is launching a brand?new version of its platform for the US market using a modern stack.

What makes this opportunity stand out is the blend of startup-style ownership with the stability of an established, profitable business. You'll be part of the first US-based engineering team, working on a complete rebuild of their core SaaS product-no legacy code, no patchwork fixes, just greenfield development. If you enjoy fast?paced environments, solving real customer problems, and having a direct impact on product direction, this role offers significant growth, autonomy, and visibility.

Required Skills & Experience

4-7 years of professional software engineering experience

Strong experience with TypeScript, React, and Node.js

Strong Experience with Python

Ability to work pragmatically-shipping high quality features without over-engineering

Experience working in fast moving, startup-like environments

Strong communication skills and comfort collaborating cross?functionally

Must be able to work onsite 5 days/week in Arlington Desired Skills & Experience

Experience with Next.js

Experience with React Native and launching apps to both the Apple App Store and Google Play Store

Background in B2B SaaS or multi-tenant platforms

Experience building scheduling, event, or membership-based systems What You Will Be Doing

Tech Breakdown

60% TypeScript, React, React Native

30% Node.js / Next.js backend development

10% Python and supporting tooling Daily Responsibilities

80% Hands-On Development

10% Architecture & Technical Decision Making

10% Team Collaboration, Product Input, and Iteration

Applicants must be currently authorized to work in the US on a full time basis now and in the future.

Specialization :

Python

Javascript